Why not Kim Catrall? Her IMDB bio says, “At 11, she returned [from Canada] to her native country and studied at the London Academy of Music and Dramatic Art. She returned to Vancouver and, at age 16, graduated high school and won a scholarship to study at the American Academy of Dramatic Arts in New York. During her final year at the academy, she won a part in Otto Preminger’s Rosebud (1975). Following her film debut, Kim returned to the theatre, first in Vancouver and then in repertory in Toronto prior to winning a contract at Universal in Los Angeles . . .” Her list of film and TV credits since 1975 is very long: http://www.imdb.com/name/nm0000326/